Shock damper for outlet pipe of diaphragm pump

ABSTRACT

The present invention provides a shock damper for outlet pipe of diaphragm pump comprising a shock damper pod including an intake jointer, an outtake jointer, a stroke cavity and a cap receptacle, a damping block, a damping elastomer and a damper cap. After screwing the intake jointer into the water outlet orifice of the pump upper hood with motor power on, pressurized water come from high-pressured chamber will flow into water intake channel of shock damper pod to impact damping block in periodically pulsatile manner; Meanwhile, resilient force of compressed spring will offset the periodic impact of pressurized water in counteracting damper manner so that pressurized water will become a steady flow without any pulsation. Accordingly, the shock damper not only can obviate the shock and vibration for the outlet pipe but also can reduce the shock and annoying noise in the pump upper hood.

This application claims the benefit of provisional U.S. Patent Application No. 61/193,362, field Nov. 21, 2008,

FIELD OF THE PRESENT INVENTION

The shock damper of the present invention relates to diaphragm pumps, which have been exclusively used with RO (Reverse Osmosis) purifier or RO purification system, particularly for one that not only can obviate the shock and vibration for the outlet pipe but also can reduce the shock and annoying noise in the pump upper hood.

BACKGROUND OF THE INVENTION

Currently, the compressing diaphragm pumps, which have been exclusively used with RO (Reverse Osmosis) purifier or RO purification system popularly, includes issued US Patents of U.S. Pat. Nos. 4,396,357, 4,610,605, 5,476,367, 5,571,000, 5,615,597, 5,626,464, 5,649,812, 5,706,715, 5,791,882, 5,816,133, 6,048,183, 6,089,838, 6,299,414, 6,604,909, 6,840,745 and 6,892,624. The compressing diaphragm pump aforesaid, as shown in FIGS. 1 through 4, essentially comprises a motor 10 with an output shaft (not shown), a round motor hood chassis 11 with plural screw bores 12 disposed at peripheral thereof, three wobble roundels 13, a valvular diaphragm cover assembly 20 and a pump upper hood 30 with plural perforated holes 36 disposed at peripheral thereof; By driving the bolts 2 through aligned corresponding perforated holes 36 at the pump upper hood 30 and screw bores 12 at the motor hood chassis 11, all the motor hood chassis 11, wobble roundels 13, valvular diaphragm cover assembly 20 and pump upper hood 30 are orderly stacked and assembled as an integral entity (as shown in FIG. 2), wherein: Said wobble roundels 13, which are evenly disposed in the motor hood chassis 11 in radial manner, are driven by the output shaft of the motor 10 to transform into alternately axial movements respectively; Said valvular diaphragm cover assembly 20, which is sandwiched between the pump upper hood 30 above and the motor hood chassis 11 beneath, includes a valvular cover 21, a diaphragm 22, an invert dome-shaped high pressure valve 23 created at the central top surface of the valvular cover 21, three cupola-shaped low pressure valves 24 circumjacent beneath the high pressure valve 23 and three low-pressured chambers 25, each of which is respectively formed between each corresponding low pressure valve 24 and the diaphragm 22 (as shown in FIGS. 1, 3 and 4); and

Said pump upper hood 30, which is an adapted hollow dome with bottom opening, includes a water inlet orifice 31 and a water outlet orifice 32 disposed on each opposed peripheral respectively, a tiered cavity 37 inwardly created at the bottom opening thereof to closely match with the peripheral of the valvular diaphragm cover assembly 20, a round well-shaped pit 38 outwardly created at the inner central top wall thereof, a water outlet channel 35 perforated at the lateral wall of the round well-shaped pit 38 to communicate with the water outlet orifice 32 and a high-pressured chamber 34 encompassed by the inner wall of the round well-shaped pit 38 and the top surface of the valvular diaphragm cover assembly 20 upon the round well-shaped pit 38 closely docking the valvular diaphragm cover assembly 20 (as shown in FIGS. 3 and 4).

Please refer to FIGS. 3 and 4 that show the pumping operation of the aforesaid conventional diaphragm pump. Firstly, when the motor 10 is powered on, the tap water W come from the water inlet orifice 31 of the pump upper hood 30 flows into the low-pressured chamber 25; Secondly, upon each wobble roundel 13 being orderly driven by the driving power from the output shaft of the motor 10, each corresponding low pressure valve 24 will pump in the diaphragm 20 so that the tap water W in the low-pressured chamber 25 will be preliminarily pumped up to water pressure of 60 psi˜120 psi as become pressurized water Wp; Thirdly, the pressurized water Wp is enabled to flow into the high-pressured chamber 34 via the high pressure valve 23 in the diaphragm 20; and Finally, the pressurized water Wp is pumped out the water outlet channel 35 of the well-shaped pit 38 and expelled out the diaphragm pump via the water outlet orifice 32 of the pump upper hood 30 (as arrowheads shown in FIGS. 3 and 4) for being used in the filter cartridge in the RO (Reverse Osmosis) purifier or RO purification system with required water pressure.

Recently, a conventional diaphragm pump with automatic water cutoff function if motor in rest mode is produced by certain diaphragm pump manufacturers such as those disclosed in the Taiwan Utility Model Patent published number of 465678. The foregoing conventional diaphragm pump with automatic water cutoff function if motor in rest mode is hereinafter called “diaphragm pump of automatic water cutoff type” or “automatic water cutoff diaphragm pump” for short. As shown in FIGS. 5 through 8, other than all the structural parts aforesaid in the foregoing conventional diaphragm pump, the diaphragm pump of automatic water cutoff type also modifies the original pump upper hood 30 into an adapted pump upper hood 40, which is an adapted hollow dome with bottom opening, includes a water inlet orifice 41 and a water outlet orifice 42 disposed on each opposed peripheral respectively, a round well-shaped pit 48 outwardly created at the inner central top wall thereof, a high-pressured chamber 44 encompassed therein, an upward accommodating pit 401 of hollow round well with a top opening and an upward water compressed cavity 402 of hollow round well with a top opening such that the accommodating pit 401 stacks on the water compressed cavity 402, wherein Said accommodating pit 401, which is disposed on the central top surface of the pump upper hood 40 with an inner diameter bored to be bigger than the inner diameter of the water compressed cavity 402, has an elastic membrane disk 50 and a hood cover mount 60 contained therein in upward stack manner as well as a flow directing channel 404 downwardly created along the inner and from the bottom surface of the accommodating pit 401 towards the well-shaped pit 48 to connect with the water inlet orifice 41 in inter-fluent communicable manner; Said water compressed cavity 402, which is downwardly created from the central bottom surface of the accommodating pit 401, has a water outlet channel 45 perforated near the bottom side of the lateral wall thereof to communicate with the water outlet orifice 42, a cylindrical shell tunnel 403 is created outsides thereof with open upper end connecting with the bottom surface of the accommodating pit 401 in inter-fluent communicable manner and an intermediate outtake vent 405 is created at the lateral wall thereof to communicate with the water outlet channel 45; Said hood cover mount 60, which is stacked over the elastic membrane disk 50, has a round well-shaped pit 61 with bottom opening in association with plural flow directing pores 62 at the lateral wall outwardly created at the bottom section thereof and a spring 63 in association with a dented receptacle 64 disposed therein so that the dented receptacle 64 stroke is confined by the well-shaped pit 61 and the elastic membrane disk 50 is enabled by the stretching resilience of the spring 63 to block the openings towards the accommodating pit 401 from water compressed cavity 402, cylindrical shell tunnel 403 and flow directing channel 404 (as shown in FIGS. 6 and 8);

Please refer to FIGS. 7 and 8 that show the pumping operation of the aforesaid conventional diaphragm pump of automatic water cutoff type. Under the condition that the motor 10 being powered on: Firstly, the tap water W come from the water inlet orifice 41 of the pump upper hood 40 flows into the low-pressured chamber 25 for being pumped by each corresponding low pressure valve 24 in the diaphragm 20 up to water pressure of 60 psi˜120 psi as become pressurized water Wp; Secondly, the pressurized water Wp is enabled to flow into the high-pressured chamber 44 via the high pressure valve 23 in the diaphragm 20 (as arrowheads shown in FIG. 7); Meanwhile, the tap water W come from the water inlet orifice 41 will flow into the accommodating pit 401 via the flow directing channel 404 to fill the well-shaped pit 61 in full manner via flow directing pores 62; Thereby, the elastic membrane disk 50 is suffered two opposed forces, namely, the downward force is the resultant force by the water pressure of the tap water W in the well-shaped pit 61 and the stretching resilience of the spring 63 while the upward force is the water pressure of the pressurized water Wp come from the high-pressured chamber 44 via the cylindrical shell tunnel 403; Under the motor 10 power on condition, the upward force from the water pressure of the pressurized water Wp of the cylindrical shell tunnel 403 is strong enough to overcome the resultant downward force by the water pressure of the tap water W in the well-shaped pit 61 and the stretching resilience of the spring 63 so that the elastic membrane disk 50 is pushed up to detach from the top surface of the water compressed cavity 402 for allowing the pressurized water Wp to get into the water compressed cavity 402; and Finally, the pressurized water Wp is expelled out the diaphragm pump via the water outlet orifice 42 of the pump upper hood 40 for being used in the filter cartridge in the RO (Reverse Osmosis) purifier or RO purification system with required water pressure (as shown in FIG. 8). Under the condition that the motor 10 being powered off: Firstly, the tap water W come from the water inlet orifice 41 of the pump upper hood 40 can neither flow into the low-pressured chamber 25 nor into the high-pressured chamber 44; Secondly, the tap water W come from the water inlet orifice 41 can still flow into the accommodating pit 401 via the flow directing channel 404 to fill the well-shaped pit 61 in full manner via flow directing pores 62; Thereby, the elastic membrane disk 50 is only suffered a resultant downward force by the water pressure of the tap water W in the well-shaped pit 61 and the stretching resilience of the spring 63 because the upward force form the water pressure of the pressurized water Wp come from the high-pressured chamber 44 via the cylindrical shell tunnel 403 is decayed now; Under the motor 10 power off condition, no upward force from the water pressure of the pressurized water Wp of the cylindrical shell tunnel 403 to overcome the resultant downward force by the water pressure of the tap water W in the well-shaped pit 61 and the stretching resilience of the spring 63 so that the elastic membrane disk 50 is pushed down to closely attach the top surface of the water compressed cavity 402 for blocking and preventing the pressurized water Wp from getting into the water compressed cavity 402; and Finally, the pressurized water Wp is automatically cut off (as shown in FIG. 7).

Please refer to FIGS. 9 and 10, for installing the conventional diaphragm pump in the RO (Reverse Osmosis) purifier or RO purification system, the lead plumbing process is normally as below: Firstly, screw each piping end 71 of both conventional elbow jointers 70 on the water inlet orifice 31 and water outlet orifice 32 of the pump upper hood 30 respectively; Secondly, insert each water tapping pipe P into each corresponding tapping end 72 of both elbow jointers 70; and Finally, sleeve a flange nut 73 over the male thread on the tapping end 72 of each corresponding of both elbow jointers 70 for securely screwing with each corresponding water tapping pipe P to finish the lead plumbing process. For further retrospectively examining the pumping operation of aforesaid conventional diaphragm pump described above. When the motor 10 is powered on, three wobble roundels 13 will orderly move up and down three times for each revolution of the motor 10, each low-pressured chamber 25 is orderly activated by each corresponding wobble roundels 13 to pumped the tap water W into the high-pressured chamber 34. Normally, the motor 10 runs 700 revolutions per minute (700 RPM) so that there is 2100 times per minute of the tap water W being pumped into the water outlet channel 35 of the pump upper hood 30 via the high-pressured chamber 34 and directed into the water tapping pipe P via the piping end 71 and tapping end 72 of the elbow jointer 70 (as shown in FIG. 10). Accordingly, the pressurized water Wp will impact on the inner wall of the piping end 71 for the elbow jointer 70 at the water outlet orifice 32 2100 times per minute so that the water tapping pipe P will act to shock and vibrate for being incurred from the pump upper hood 30 by the reaction to such high frequency impact (as hypothetic line of the water tapping pipe P shown in FIG. 7). An undesirable annoying noise is incurred because the shock and vibration in the water tapping pipe P indirectly affects to the other parts in the RO (Reverse Osmosis) purifier or RO purification system. Therefore, the user has to be suffered the annoying noise from the operation of the RO purifier or RO purification system. In the long run, it becomes a noise pollution and torture for the household life. The foregoing annoying noise and shock will be deteriorated in the conventional diaphragm of automatic water cutoff type as depicted below. Please refer to FIGS. 11 and 12, the pressurized water Wp pumped in the high-pressured chamber 44, which does not directly flow into the water outlet orifice 42 via the water outlet channel 45 instead, is firstly detoured into the water compressed cavity 402 via the cylindrical shell tunnel 403 and open gap between the elastic membrane disk 50 and the top surface of the water compressed cavity 402, then the pressurized water Wp is directed into the water tapping pipe P via the water outlet channel 45 and the piping end 71 and tapping end 72 of the elbow jointer 70 (as shown in FIG. 12). Thereby, the circulation path of the pressurized water Wp becomes roundabout and elongated so that the pressurized water Wp impact on the inner wall of the piping end 71 for the elbow jointer 70 is worsened by the pressurized water Wp circulation detoured into the water compressed cavity 402 with result that the foregoing annoying noise and shock is deteriorated. Therefore, how to effectively obviate the “shock in the outlet pipe of the diaphragm pump” to further eliminate the annoying noise incurred becomes a critical issue for all diaphragm pump manufacturers, which does not have an effective and simple scheme is proposed.

SUMMARY OF THE INVENTION

After having addressing and deeply studied the forgoing issue of “shock with annoying noise in the outlet pipe of the diaphragm pump” happened in the conventional diaphragm pimp, an effective and simple solving means is eventually worked out by the applicant of the present invention via painstaking research and development. Therefore, the primary object of the present invention is to provide a shock damper for outlet pipe of diaphragm pump, which comprises a shock damper pod, a damping block, a damping elastomer and a damper cap, wherein said shock damper pod, which is an unitarily molded integral hollow cylinder, includes an intake jointer, an outtake jointer, a stroke cavity and a cap receptacle, wherein said intake jointer, which is male threaded, has a water intake channel run throughout with a distal end connecting with the proximal top end of the stroke cavity in inter-fluent communicable manner; said outtake jointer, which is disposed at the lateral wall of the shock damper pod with male and female threaded manner, has a water outtake channel run throughout with a upper end connecting with the lateral wall of the stroke cavity in inter-fluent communicable manner; said stroke cavity is a hollow cavity; and said cap receptacle is female threaded; said damping block, which is an adapted cylinder inserted in the stroke cavity of the shock damper pod, includes a closed top surface and a bottom sole with a dented receptacle; said damper cap, which is engaged in the stroke cavity of the shock damper pod, includes a central holding dent with an outer male thread; and said damping elastomer is disposed between the damping block and the damper cap. After screwing the intake jointer of the shock damper pod into the water outlet orifice of the pump upper hood, when the motor is powered on, the pressurized water come from the high-pressured chamber will flow into the water intake channel of the shock damper pod to impact on the top surface of the damping block in periodically pulsatile manner; Meanwhile, the resilient force of the compressed spring in the stroke cavity will offset the periodic impact of the pulsatile pressurized water in counteracting damper manner so that the pressurized water will become a steady flow without any pulsation. Accordingly, the shock damper of the present invention used in the conventional diaphragm pump provides double benefit effects that it not only can obviate the shock and vibration for the outlet pipe but also can reduce the shock and annoying noise in the pump upper hood.

The other object of the present invention is to provide a shock damper for outlet pipe of diaphragm pump, which comprises a shock damper pod, a damping block, a damping elastomer and a damper cap, wherein said shock damper pod, which is an extended hollow cylinder integrated with the water outlet channel of the pump upper hood on the diaphragm pump, comprises an outtake jointer, a stroke cavity and an open cap receptacle end. When the motor is powered on, the pressurized water come from the high-pressured chamber will flow into the water outlet channel to impact on the top surface of the damping block in periodically pulsatile manner; Meanwhile, the resilient force of the compressed spring in the stroke cavity will offset the periodic impact of the pulsatile pressurized water in counteracting damper manner so that the pressurized water will become a steady flow without any pulsation. Accordingly, the shock damper of the present invention used in the conventional diaphragm pump provides double benefit effects that it not only can obviate the shock and vibration for the outlet pipe but also can reduce the shock and annoying noise in the pump upper hood.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is an exploded perspective view showing the conventional diaphragm pump of the prior art.

FIG. 2 is an assembly perspective view of the conventional diaphragm pump.

FIG. 3 is a sectional view taken along the line 3-3 of the FIG. 2.

FIG. 4 is a sectional view taken along the line 4-4 of the FIG. 2.

FIG. 5 is an exploded perspective view showing the conventional diaphragm pump of automatic water cutoff type.

FIG. 6 is a sectional perspective view for a pump upper hood in the conventional diaphragm pump of automatic water cutoff type.

FIG. 7 is a sectional schematic view taken along the line 7-7 of the FIG. 5.

FIG. 8 is a sectional view showing the pumping operation for a pump upper hood in the conventional diaphragm pump of automatic water cutoff type.

FIG. 9 is an exploded perspective view showing two conventional elbow jointers having screwed with the conventional diaphragm pump.

FIG. 10 is a sectional view taken along the line 10-10 of the FIG. 9.

FIG. 11 is a perspective schematic view showing two conventional elbow jointers having screwed with the conventional diaphragm pump of automatic water cutoff type.

FIG. 12 is a sectional view taken along the line 12-12 of the FIG. 11.

FIG. 13 is an exploded perspective view showing the first preferred embodiment of the present invention.

FIG. 14 is a sectional view taken along the line 14-14 of the FIG. 13.

FIG. 15 is a perspective schematic view showing the first preferred embodiment of the present invention installed on a pump upper hood in the conventional diaphragm pump.

FIG. 16 is a sectional view taken along the line 16-16 of the FIG. 15.

FIG. 17 is a sectional view showing the pumping operation for the first preferred embodiment of the present invention installed on a pump upper hood in the conventional diaphragm pump.

FIG. 18 is a perspective schematic view showing the first preferred embodiment of the present invention installed on a pump upper hood in the conventional diaphragm pump of automatic water cutoff type.

FIG. 19 is a sectional view taken along the line 19-19 of the FIG. 18.

FIG. 20 is a sectional schematic view showing the second exemplary embodiment of the present invention installed on a pump upper hood in the conventional diaphragm pump.

FIG. 21 is an exploded perspective view showing the third exemplary embodiment of the present invention installed on a pump upper hood in the conventional diaphragm pump.

FIG. 22 is a sectional view taken along the line 22-22 of the FIG. 21.

FIG. 23 is a sectional view showing the third exemplary embodiment of the present invention installed on a pump upper hood in the conventional diaphragm pump.

FIG. 24 is a sectional view showing the pumping operation for the third exemplary embodiment of the present invention installed on a pump upper hood in the conventional diaphragm pump.

FIG. 25 is a sectional view showing the pumping operation for the third exemplary embodiment of the present invention installed on a pump upper hood in the conventional diaphragm pump of automatic water cutoff type.

FIG. 26 is a perspective schematic view showing the fourth exemplary embodiment of the present invention integrated with a pump upper hood in the conventional diaphragm pump.

FIG. 27 is a sectional view taken along the line 27-27 of the FIG. 26.

FIG. 28 is a sectional schematic view showing the pumping operation for the fourth exemplary embodiment of the present invention integrated with a pump upper hood in the conventional diaphragm pump.

FIG. 29 is a sectional schematic view showing the fourth exemplary embodiment of the present invention integrated with a pump upper hood in the conventional diaphragm pump of automatic water cutoff type.

FIG. 30 is a sectional view showing the pumping operation for the fourth exemplary embodiment of the present invention integrated with a pump upper hood in the conventional diaphragm pump of automatic water cutoff type.

FIG. 31 is a sectional view showing a combination of the third and the fourth exemplary embodiments of the present invention integrated with a pump upper hood in the conventional diaphragm pump.

FIG. 32 is a sectional view showing the pumping operation for a combination of the third and the fourth exemplary embodiments of the present invention integrated with a pump upper hood in the conventional diaphragm pump.

FIG. 33 is a sectional view showing a combination of the third and the fourth exemplary embodiments of the present invention integrated with a pump upper hood in the conventional diaphragm pump of automatic water cutoff type.

FIG. 34 is a sectional view showing the pumping operation for a combination of the third and the fourth exemplary embodiments of the present invention integrated with a pump upper hood in the conventional diaphragm pump of automatic water cutoff type.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Please refer to FIGS. 13 through 15 a shock damper for outlet pipe of diaphragm pump according to a first preferred embodiment of the present invention comprises a shock damper pod 80, a damping block 90, a damping elastomer 100 and a damper cap 200 with male thread 202.

Referring to FIGS. 13 to 15, the shock damper pod 80 is an unitarily molded integral hollow cylinder, includes an intake jointer 81, an outtake jointer 82, a stroke cavity 83 and a cap receptacle 84, wherein said intake jointer 81, which is male threaded for engaging with the water outlet orifice 32 of the pump upper hood 30, has a water intake channel 811 run throughout with a distal end connecting with the proximal top end of the stroke cavity 83 in inter-fluent communicable manner; said outtake jointer 82, which is disposed at the lateral wall of the shock damper pod 80 with male threaded manner for engaging with the water output pipe P2 with a flange nut 73, has a water outtake channel 821 run throughout with a upper end connecting with the lateral wall of the stroke cavity 83 in inter-fluent communicable manner; said stroke cavity 83 is a hollow cavity for holding the damping block 90 and damping elastomer 100 therein as well as to provide a space for the to-and-fro reciprocal movement of the damping block 90; and said cap receptacle 84 is female threaded for engaging with the male thread 202 of the damper cap 200;

The damping block 90, which is an adapted cylinder inserted in the stroke cavity 83 of the shock damper pod 80, includes a closed top surface 91 and a bottom sole 92 with a dented receptacle 93;

The damper cap 200, which is engaged in the stroke cavity 83 of the shock damper pod 80, includes a central holding dent 201 with an outer male thread 202 for engaging with female thread of the cap receptacle 84; and

The damping elastomer 100, which is preferably a compressed spring, has outer diameter thereof is less than the inner diameter of the dented receptacle 93 in the damping block 90 and the inner diameter of the holding dent 201 in the damper cap 200 so that each end of which can be respectively inserted in the damping block 90 and damper cap 200.

Please refer to FIGS. 15 and 16 that show the assemble procedure of the above first preferred embodiment of the present invention installed on a pump upper hood 30 in the conventional diaphragm pump. Firstly, insert the damping block 90 into the stroke cavity 83 of the shock damper pod 80 by heading the top surface 91 of the damping block 90 towards the shock damper pod 80; Secondly, inset anyone end of the compressed spring 100 into the dented receptacle 93 of the damping block 90; Thirdly, align and cap the holding dent 201 of the damper cap 200 over the other end of the compressed spring 100 in holding attachment manner; and Finally, insert and screw the male thread 202 of the damper cap 200 with the female thread of the cap receptacle 84 in the stroke cavity 83 in engagement manner so that the top surface 91 of the damping block 90 closely attaches the inner top wall of the stroke cavity 83 to block the lower end of the water intake channel 811 (as shown in FIG. 16).

Please refer to FIGS. 15 through 17 that show the installing procedure and pumping operation for the first preferred embodiment with the shock damper of the present invention in the conventional diaphragm pump. Regarding the installing procedure, firstly screw the intake jointer 81 of the shock damper pod 80 into the water outlet orifice 32 of the pump upper hood 30, and then screw the water output pipe P2 with the outtake jointer 82 of the shock damper pod 80 to finish the installing procedure. The pumping operation is disclosed as below: when the motor 10 is powered on, the pressurized water Wp, which comes from the high-pressured chamber 34 via the water outlet channel 35, will flow into the water intake channel 811 of the shock damper pod 80 to impact on the top surface 91 of the damping block 90 in periodically pulsatile manner; Meanwhile, the resilient force of the compressed spring 100 in the stroke cavity 83 will offset the periodic impact of the pulsatile pressurized water Wp in counteracting damper manner so that the pressurized water Wp will become a steady flow without any pulsation to be directed out of the diaphragm pump via the water outtake channel 821 of the outtake jointer 82 for being used in the filter cartridge in the RO (Reverse Osmosis) purifier or RO purification system with required water pressure and steady flow manner (as shown in FIG. 17). Accordingly, by the offset damping function of the compressed spring 100 with damping block 90 in the stroke cavity 83, the shock and annoying noise in the pump upper hood 30 will be significantly reduced. Thereby, neither the shock and vibration of the water output pipe P2 will happen nor the harmful affection on the other parts in the RO purifier or RO purification system will incur. Thus, the shock damper of the present invention used in the conventional diaphragm pump provides double benefit effects that it not only can obviate the shock and vibration for the outlet pipe but also can reduce the shock and annoying noise in the pump upper hood 30.

Referring to FIGS. 18 and 19 that show the installing procedure and pumping operation for the first preferred embodiment with the shock damper of the present invention in the conventional diaphragm pump of automatic water cutoff type. Regarding the installing procedure, firstly screw the intake jointer 81 of the shock damper pod 80 into the water outlet orifice 42 of the pump upper hood 40, and then screw the water output pipe P2 with the outtake jointer 82 of the shock damper pod 80 to finish the installing procedure. The pumping operation is disclosed as below: when the motor 10 is powered on, the pressurized water Wp, which passes the water outlet channel 45, will flow into the water intake channel 811 of the shock damper pod 80 to impact on the top surface 91 of the damping block 90 in periodically pulsatile manner; Meanwhile, the resilient force of the compressed spring 100 in the stroke cavity 83 will offset the periodic impact of the pulsatile pressurized water Wp in counteracting damper manner so that the pressurized water Wp will become a steady flow without any pulsation to be directed out of the diaphragm pump via the water outtake channel 821 of the outtake jointer 82 (as shown in FIG. 19). Accordingly, by the offset damping function of the compressed spring 100 with damping block 90 in the stroke cavity 83, the shock damper of the present invention used in the conventional diaphragm pump provides double benefit effects that it not only can obviate the shock and vibration for the outlet pipe but also can reduce the shock and annoying noise in the pump upper hood 40.

Please refer to FIG. 20 that shows the pumping operation for the second exemplary embodiment of the present invention in the conventional diaphragm pump. Other than all the same parts in the first preferred embodiment in association with FIGS. 15 through 17, the shock damper here further comprises a gasket 94 and a washer 203, wherein said gasket 94, which sleeves over the damping block 90 near the top surface 91, is served to prevent the pressurized water Wp from permeating into the compressed spring 100 to avoid any corrosion incurred, while the washer 203, which sleeves over the male thread 202 peripheral of the damper cap 200, is served adjust the distance between the damper cap 200 and shock damper pod 80 in increasing manner so that the resilient force of the compressed spring 100 can be regulated to cope with the fluctuation of the pressurized water Wp.

Please refer to FIGS. 21 through 24 that show the pumping operation for the third exemplary embodiment with the shock damper of the present invention in the conventional diaphragm pump. Other than all the same parts in the first preferred embodiment in association with FIGS. 15 through 17, a truncated conical directing spoiler 95, which is centrally configured on the top surface 91 of the damping block 90, is also comprised in the shock damper here to be extended into the water intake channel 811 of the shock damper pod 80 in attachment manner (as shown in FIG. 23). The directing spoiler 95 provides both directing function and spoiling function for the pressurized water Wp, when the pressurized water Wp impacts on the top surface 91 of the damping block 90 (as shown in FIG. 24).

Although the profile of the directing spoiler 95, which is preferably shown in truncated cone with neat surface in this exemplary embodiment for convenient illustration, is not intended for limiting accordingly. The directing spoiler 95 can be extensively altered into an truncated/non-truncated obelisk or dome shape other than said cone shape with neat, dial fluted, spiral grooved surface or the like respectively to practically accord with the optimal trade-off leverage between the damping and spoiling effects.

Please refer to FIG. 25 that shows the pumping operation for the third exemplary embodiment with the shock damper with additional directing spoiler 95 of the present invention in the conventional diaphragm pump of automatic water cutoff type. As disclosed above, the directing spoiler 95, which is extended into the water intake channel 811 of the shock damper pod 80 in attachment manner, provides both directing function and spoiling function for the pressurized water Wp, when the pressurized water Wp impacts on the top surface 91 of the damping block 90.

Please refer to FIGS. 26 and 27 that show the fourth exemplary embodiment for a “shock damper for outlet pipe of diaphragm pump” of the present invention integrated with a pump upper hood in the conventional diaphragm pump.

The shock damper basically comprises a shock damper pod 320, a damping block 90, a damping elastomer 100 and a damper cap 200 with male thread 202, wherein

Said shock damper pod 320, which is an extended hollow cylinder integrated with the water outlet channel 35 of the pump upper hood 30 on the diaphragm pump, comprises an outtake jointer 322, a stroke cavity 321 and an open cap receptacle end, wherein said stroke cavity 321, which is inwardly created from the open cap receptacle end to communicate with the water outlet channel 35 in the diaphragm pump of automatic water cutoff type having inner diameter being bigger than that of the water outlet channel 35, is served for holding the damping block 90 and damping elastomer 100 therein as well as to provide a space for the to-and-fro reciprocal movement of the damping block 90; said outtake jointer 322, which is disposed at the lateral wall of the shock damper pod 320 with male threaded manner for engaging with the water output pipe P2 with a flange nut, has a water outtake channel 323 run throughout with a upper end connecting with the lateral wall of the stroke cavity 321 in inter-fluent communicable manner; and said cap receptacle end is female threaded for engaging with the male thread 202 of the damper cap 200;

Said damping block 90, which is an adapted cylinder inserted in the stroke cavity 321 of the shock damper pod 320, includes a closed top surface 91 and a bottom sole 92 with a dented receptacle 93;

Said damper cap 200, which is engaged in the stroke cavity 321 of the shock damper pod 320, includes a central holding dent 201 with an outer male thread 202 for engaging with female thread of the cap receptacle end; and

Said damping elastomer 100, which is preferably a compressed spring, has outer diameter thereof is less than the inner diameter of the dented receptacle 93 in the damping block 90 and the inner diameter of the holding dent 201 in the damper cap 200 so that each end of which can be respectively inserted in the damping block 90 and damper cap 200.

The assemble procedure is described as below: Firstly, insert the damping block 90 into the stroke cavity 321 of the shock damper pod 320 by heading the top surface 91 of the damping block 90 towards the shock damper pod 320; Secondly, inset anyone end of the compressed spring 100 into the dented receptacle 93 of the damping block 90; Thirdly, align and cap the holding dent 201 of the damper cap 200 over the other end of the compressed spring 100 in holding attachment manner; and Finally, insert and screw the male thread 202 of the damper cap 200 with the female thread of the cap receptacle end in the stroke cavity 321 in engagement manner so that the top surface 91 of the damping block 90 closely attaches the inner top wall of the stroke cavity 321 to block the distal end of the water outlet channel 35 (as shown in FIG. 27).

Please refer to FIG. 28 that shows the pumping operation for the fourth exemplary embodiment with the integrated shock damper of the present invention in the conventional diaphragm pump. The pumping operation is disclosed as below: when the motor 10 is powered on, the pressurized water Wp, which comes from the high-pressured chamber 34, will flow into the water outlet channel 35 to impact on the top surface 91 of the damping block 90 in periodically pulsatile manner; Meanwhile, the resilient force of the compressed spring 100 in the stroke cavity 321 will offset the periodic impact of the pulsatile pressurized water Wp in counteracting damper manner so that the pressurized water Wp will become a steady flow without any pulsation to be directed out of the diaphragm pump via the water outtake channel 323 of the outtake jointer 322 for being used in the filter cartridge in the RO (Reverse Osmosis) purifier or RO purification system with required water pressure and steady flow manner. Accordingly, by the offset damping function of the compressed spring 100 with damping block 90 in the stroke cavity 321, the shock and annoying noise in the pump upper hood 30 will be significantly reduced. Thereby, neither the shock and vibration of the water output pipe P2 will happen nor the harmful affection on the other parts in the RO purifier or RO purification system will incur. Thus, the shock damper of the present invention used in the conventional diaphragm pump provides double benefit effects that it not only can obviate the shock and vibration for the outlet pipe but also can reduce the shock and annoying noise in the pump upper hood 30.

Please refer to FIGS. 29 and 30 that show the pumping operation for the fourth exemplary embodiment with the integrated shock damper of the present invention in the conventional diaphragm pump of automatic water cutoff type. The shock damper here basically comprises a shock damper pod 420, a damping block 90, a damping elastomer 100 and a damper cap 200 with male thread 202, wherein said shock damper pod 420, which is an extended hollow cylinder integrated with the water outlet channel 45 of the pump upper hood 40 on the diaphragm, comprises an outtake jointer 422, a stroke cavity 421 and an open cap receptacle end, wherein said stroke cavity 421, which is inwardly created from the open cap receptacle end with inner diameter being bigger than that of the water outlet channel 45, is served for holding the damping block 90 and damping elastomer 100 therein as well as to provide a space for the to-and-fro reciprocal movement of the damping block 90; said outtake jointer 422, which is disposed at the lateral wall of the shock damper pod 420 with male and female threaded manner for engaging with the water output pipe P2 with a flange nut, has a water outtake channel 423 run throughout with a upper end connecting with the lateral wall of the stroke cavity 421 in inter-fluent communicable manner; and said cap receptacle end is female threaded for engaging with the male thread 202 of the damper cap 200 (as shown in FIG. 29). The pumping operation is disclosed as below: when the motor 10 is powered on, the pressurized water Wp will flow into the water outlet channel 45 to impact on the top surface 91 of the damping block 90 in periodically pulsatile manner; Meanwhile, the resilient force of the compressed spring 100 in the stroke cavity 421 will offset the periodic impact of the pulsatile pressurized water Wp in counteracting damper manner so that the pressurized water Wp will become a steady flow without any pulsation to be directed out of the diaphragm pump via the water outtake channel 423 of the outtake jointer 422. Accordingly, by the offset damping function of the compressed spring 100 with damping block 90 in the stroke cavity 421, the shock damper of the present invention used in the conventional diaphragm pump provides double benefit effects that it not only can obviate the shock and vibration for the outlet pipe but also can reduce the shock and annoying noise in the pump upper hood 40 (as shown in FIG. 30).

Please refer to FIGS. 31 and 32 that show a combination of the third and the fourth exemplary embodiments for a “shock damper for outlet pipe of diaphragm pump” of the present invention in the conventional diaphragm pump. As disclosed above, the directing spoiler 95, which is inserted into the water outlet channel 35 from the shock damper pod 320 in attachment manner (as shown in FIG. 31), provides both directing function and spoiling function for the pressurized water Wp from the high-pressured chamber 34, when the pressurized water Wp impacts on the top surface 91 of the damping block 90 (as shown in FIG. 32).

Please refer to FIGS. 33 and 34 that show a combination of the third and the fourth exemplary embodiments for a “shock damper for outlet pipe of diaphragm pump” of the present invention in the conventional diaphragm pump of automatic water cutoff type. As disclosed above, the directing spoiler 95, which is inserted into the water outlet channel 45 from the shock damper pod 420 in attachment manner (as shown in FIG. 33), provides both directing function and spoiling function for the pressurized water Wp from the water compressed cavity 402, when the pressurized water Wp impacts on the top surface 91 of the damping block 90 (as shown in FIG. 34).

Basing on the disclosure heretofore and experimental test, the applicant of the present invention proves that the present invention surely solve the “shock with annoying noise” issue in the outlet pipe of the diaphragm pump without any bad side-effect affecting to the other parts in the RO purifier or RO purification system after practical life test, which has valuable industrial applicability. Especially, the solving scenario contrived by the present invention is simple with innovative novelty beyond the obviousness of the prior arts, which meet the basic patentable criterion. 

1. A shock damper for outlet pipe of diaphragm pump comprising: a shock damper pod; a damping block; a damping elastomer; and a damper cap, wherein said shock damper pod is an unitarily molded integral hollow cylinder, includes an intake jointer, an outtake jointer, a stroke cavity and a cap receptacle, wherein said intake jointer, which is male threaded for engaging with a water outlet orifice of the pump upper hood, has a water intake channel run throughout with a distal end connecting with the proximal top end of the stroke cavity in inter-fluent communicable manner; said outtake jointer, which is disposed at the lateral wall of the shock damper pod with male and female threaded manner, has a water outtake channel run throughout with a upper end connecting with the lateral wall of the stroke cavity in inter-fluent communicable manner; said stroke cavity is a hollow cavity; and said cap receptacle is female threaded, wherein said damping block is an adapted cylinder inserted in the stroke cavity of the shock damper pod, which includes a closed top surface and a bottom sole with a dented receptacle, wherein said damper cap is engaged in the stroke cavity of the shock damper pod, which includes a central holding dent with an outer male thread, and wherein said damping elastomer has outer diameter thereof is less than the inner diameter of the dented receptacle in the damping block and the inner diameter of the holding dent in the damper cap.
 2. A shock damper for outlet pipe of diaphragm pump as claimed in claim 1, wherein a gasket is further disposed to sleeve over the damping block near the top surface of said damping block.
 3. A shock damper for outlet pipe of diaphragm pump as claimed in claim 1, wherein a washer is further disposed to sleeve over the male thread peripheral of said damper cap.
 4. A shock damper for outlet pipe of diaphragm pump as claimed in claim 1, wherein said damping elastomer is a compressed spring.
 5. A shock damper for outlet pipe of diaphragm pump as claimed in claim 1, wherein a truncated conical directing spoiler is further centrally configured on the top surface of said damping block.
 6. A shock damper for outlet pipe of diaphragm pump comprising: a shock damper pod; a damping block; a damping elastomer; and a damper cap, wherein said shock damper pod is an extended hollow cylinder integrated with the water outlet channel of the pump upper hood on the diaphragm pump, and comprises an outtake jointer, a stroke cavity and an open cap receptacle end, wherein said stroke cavity is inwardly created from the open cap receptacle end to communicate with the water outlet channel in the diaphragm pump of automatic water cutoff type having inner diameter being bigger than that of the water outlet channel; said outtake jointer, which is disposed at the lateral wall of the shock damper pod with male and female threaded manner, has a water outtake channel run throughout with a upper end connecting with the lateral wall of the stroke cavity in inter-fluent communicable manner; and said cap receptacle end is female threaded, wherein said damping block, which is an adapted cylinder inserted in the stroke cavity of the shock damper pod, includes a closed top surface and a bottom sole with a dented receptacle, wherein said damper cap, which is engaged in the stroke cavity of the shock damper pod, includes a central holding dent with an outer male thread, and wherein said damping elastomer has outer diameter thereof is less than the inner diameter of the dented receptacle in the damping block and the inner diameter of the holding dent in the damper cap.
 7. A shock damper for outlet pipe of diaphragm pump as claimed in claim 6, wherein a gasket is further disposed to sleeve over the damping block near the top surface of said damping block.
 8. A shock damper for outlet pipe of diaphragm pump as claimed in claim 6, wherein a washer is further disposed to sleeve over the male thread peripheral of said damper cap.
 9. A shock damper for outlet pipe of diaphragm pump as claimed in claim 6, wherein said damping elastomer is a compressed spring.
 10. A shock damper for outlet pipe of diaphragm pump as claimed in claim 6, wherein a truncated conical directing spoiler is further centrally configured on the top surface of said damping block.
 11. A shock damper for outlet pipe of diaphragm pump as claimed in claim 6, wherein said shock damper pod, which is an extended hollow cylinder integrated with the water outlet channel of the pump upper hood on the diaphragm pump of automatic water cutoff type, comprises an outtake jointer, a stroke cavity and an open cap receptacle end, wherein said stroke cavity is inwardly created from the open cap receptacle end to communicate with the water outlet channel in the diaphragm pump of automatic water cutoff type having inner diameter being bigger than that of the water outlet channel; said outtake jointer, which is disposed at the lateral wall of the shock damper pod with male threaded manner, has a water outtake channel run throughout with a upper end connecting with the lateral wall of the stroke cavity in inter-fluent communicable manner; and said cap receptacle end is female threaded. 